Macrame Cord Length Calculator
Knots eat cord. Square knots run on the rule of four times the finished length, so a 30 cm knotted section means cutting each cord at 120 cm; eight cords come to 9.6 m in total. A cord folded over a ring loses half its length to the fold, so cut those at eight times instead.
Your numbers
Cord length
120cm
Total
9.6m
Formula
Cord length = Knotted length × Cord multiple
The multiple depends on the knot: four times for square knots, six or more for a spiral, up to eight for dense patterns. Thicker cord eats more for the same knot, so tying a short test section and measuring it is the reliable way to set the multiple. Cord that comes up short cannot be joined mid-piece — you start again.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Knotted length (cm)The stretch you will fill with knots, not the finished length. | 30 | 1 and up |
| Cord multiple (×)How many times the knotted length to cut; square knots take about four. | 4 | 1 ~ 12 |
| CordsHow many cords you use. | 8 | 1 and up |
Step by step
Quick reference table
Results when only Knotted length (cm) changes and everything else stays put.
| Knotted length (cm) | Cord length (cm) | Total (m) |
|---|---|---|
| 15 | 60 | 4.8 |
| 22.5 | 90 | 7.2 |
| 30 | 120 | 9.6 |
| 45 | 180 | 14.4 |
| 60 | 240 | 19.2 |
What each result means
| Result | At default values |
|---|---|
| Cord length (cm)Cord to cut, per single cord. | 120 |
| Total (m)Every item added together — check whether tax or tip is inside it. | 9.6 |
Common mistakes
The multiple depends on the knot: four times for square knots, six or more for a spiral, up to eight for dense patterns. Thicker cord eats more for the same knot, so tying a short test section and measuring it is the reliable way to set the multiple. Cord that comes up short cannot be joined mid-piece — you start again.
Glossary
- Knotted length
- The stretch you will fill with knots, not the finished length.
- Cord multiple
- How many times the knotted length to cut; square knots take about four.
- Cords
- How many cords you use.
- Cord length
- Cord to cut, per single cord.
- Total
- Every item added together — check whether tax or tip is inside it.
Frequently asked questions
Q. How is Macrame Cord Length Calculator calculated?
Cord length = Knotted length × Cord multiple — Knots eat cord. Square knots run on the rule of four times the finished length, so a 30 cm knotted section means cutting each cord at 120 cm; eight cords come to 9.6 m in total. A cord folded over a ring loses half its length to the fold, so cut those at eight times instead.
Q. Can you walk through an example?
With Knotted length 30cm, Cord multiple 4×, Cords 8, the answer is Cord length 120cm.
Q. What do I need to enter?
Enter Knotted length, Cord multiple, Cords. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Knotted length (cm) moves the answer to Knotted length (cm) 15 → Cord length (cm) 60 and Knotted length (cm) 60 → Cord length (cm) 240. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
The multiple depends on the knot: four times for square knots, six or more for a spiral, up to eight for dense patterns. Thicker cord eats more for the same knot, so tying a short test section and measuring it is the reliable way to set the multiple. Cord that comes up short cannot be joined mid-piece — you start again.
Related calculators
Materials differ in density and absorption. If your label states a figure, use it — the defaults here are only common values.